Inhaler



(No Model.) 2 Sheets-Sheet 1.

J. K. GAILEY. INHALBR.

No. 552,901.` Patented Jan, 14, 1896'.

(Nc Model.) l 2 Sheets-Sheet. 2. J. K. GAILBY.

INHALBR.

No. 552,901. Patented Jam. 14, 1896.

` t Jaim gm@ UNITED STATES PATENT OEEicE.

JOHN l. GAILEY, OF DETROIT, ASSIGNOR, BY MESNE ASSIGNMENTS, OF ONE HALFTO CLEMENT A. DUNBAR, OF SOUTHFIELD, MICHIGAN.

INHALER.

SPECIFICATION forming part of Letters Patent No. 552,901, dated January14, 1896.

Application tiled January 29, 1895. Serial ll'ol 536,598. (No model.)

To all whom it' may concern:

Be it known that l, JOHN K. GAILEY, a citizen ot' the lUnited States,residing at Detroit, in the county of XVayne and State of Michigan, haveinvented certain new and useful Improvements in Devices forAdministering Anesthetics, of which the following is a specification,reference being had therein to the accompanyin g drawings.

The invention consists in the construction of a device for administeringanesthetics, and particularly in its construction whereby the Y strengthof the anesthetic, or the proportion of the anesthetic vapor and air canbe varied as desired.

The invention further consists in the construction of therespirator-hood and anesthetic vessel in a single structure, whereby itsconstruction. and use are simplified and its manufacture cheapened, allas more fully hereinafter described.

In the drawings, Figure lis a sectional elevation of the anestheticvessel and its connection. Fig. 2 is a top plan view thereof. Fig. 3 isa front elevation of the cap for the vapor-chamber. Figs. 4, 5, and 6are vertical sections through the controlling-valve, showing diderentpositions. Figs. 7 and 8 are vertical sections through the air-port orair-valve, showing the different positions. Fig. 9 is an elevation ofthe device as a Whole, including the respirator-hood.

A is the anesthetic or vapor chamber, preferably a jar-shaped glassvessel, having the short neck B, with which the cap O is adapted todetachably engage.

On the top of the cap is a valved body or casing D, in which is theplug-valve E, having a linger-piece F for turning it, and an indexfingerG which moves across the graduated index-plate H on the front of thecasing, as plainly shown in Fig. 3.

The valve-casing is provided on opposite sides with the air-ports a l)controlled by the plug in which is the passage c controlling the amountof air into the tube d which connects with the port b and extends tonear the bottom of the vapor-chamber. rlhe valve-casing is also providedwith the vapor-ports eandfon opposite sides and With the intermediateairport h, and the plug in line with these ports is provided with thepassage if, the tcp k of which is enlarged, shown in Figs. 4, 5 and G.The port f connects with the dischargepipe g which leads to therespirator-hood l, and this hood is provided with the checkvalves J J',so constructed that the inspiration of the patient will close the valveJ and open the valve J, and the expiration will close the valve J andopen the valve J', so that the inhalation will be taken from the tube gand the expiration Will pass directlyY out from the hood.

When the device is adjusted for use with the hood upon the face of thepatient and the valve in the position shown in Figs. 1 and 4, theair-inlet to the vapor-chamber is closed, While the air-'port It is openand will admit air freely to the patient. As the valve is turned theair-inlet port c through the plug is opened, as shown in Fig. 8, theair-inlet port It is proportionately closed and the vaporport e isproportionately opened, as shown in Fig. 6, so that the inspiration ofthe patient Will draw through the tube g a portion of air and a portionof anesthetic vapor, the proportion of which will be indicated upon thedial. For instance, one-quarter anesthetic vapor being the firstindication shown in Fig. 3, as the plug is turned farther in the samedirection the direct air-port h is proportionately closed and theair-port c proportionately opened until the valve is thrown to its eXtreme limit, (shown in Fig. 5,) when the patient Will receive byinhalation the full strength of the anesthetic vapor. The physician orsurgeon thus is enabled to graduate to a nicety the strength of theanesthetic administered and can increase or decrease it at any time bysimply changing the valve.

In Fig. S) I have shown the respirator-hood formed with means forsecuring it to the base of the chamberA, and the substantially rigiddischarge-tube g shaped to serve as a handle by means of which it may becarried. This is especially advantageous, as the attendant who isadministering the anesthetic can support the entire device in one hand,having the other hand free for regulating the valve or to perform otherduties.

IOO

By making the hood detachable from the vessel it may be readily cleansedor repaired.

It will be observed that at all times the respiration of the patientwill in no Wise be impeded regardless of the strength of vapor which isbeing administered, for the portage for supplying vapor or air to thesupply-tube remains substantially constant, regardless of the variousadj ust-ments of the valve.

IVhile I have shown a specific construction of regulating-valve and aspecific construction of combined vapor-chamber and hood, I do notdesire to be limited to such construe tions, as I believe I am the firstto construct a device of this kind for applying anesthetics having acontrolling-valve by means of which the proportions of air andanesthetic vapor may be varied at the Will of the operator.

Vhat I claim as my invention isl. A device for administeringanesthetics, comprising an anesthetic vessel, a discharge pipe leadingtherefrom, a valved hood on the outer end of the discharge, an air inletport into the discharge pipe, an air inlet port into the vessel andvalves for synchronously opening the air inlet port into the vessel andthe vapor outlet therefrom and correspondingly closingthe airport to thedischarge pipe, substantiallyas described.

2. A device for administering anesthetics comprising a vessel, a valvedhood secured directly to the vessel, a supply pipe having a rigidsection leading from the vessel to the hood and forming a handle, andvalves for controlling the supply of anesthetics to the hood,substantially as described.

3. In a device for administering anesthetics, the combination with areceptacle, of an air supply pipe leading into the same, a dischargepipe leading from the receptacle and having an extern al inlet port atits inner end` a valved hood on the outer end of the discharge, andmeans for closing the discharge from the vessel and the air supply andopening the external inlet port, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN K. GAILEY.

Witnesses JAMES WHITTEMORE, L. J. IVHITTEMORE.

